There is provided a power system designed to enable electronic devices to be powered. The system includes a planar surface on which a device to be powered is placed. Within the power system and substantially parallel to the planar surface are multiple primary transformer windings formed in a multi-layer structure that couple energy inductively to a secondary winding formed in the device to be powered. A winding of a second layer is offset relative to a winding of a first layer.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A power system comprising: a planar surface adapted to receive an electronic device to be powered; a primary power circuit comprising a plurality of transformer windings formed in a multilayer structure comprising at least two layers, each of the transformer windings being substantially parallel to the planar surface, a first layer comprising a plurality of the transformer windings, a transformer winding of a second layer being offset relative to a transformer winding of the first layer; and an electromagnetic shield on a side of the primary power circuit opposite from the planar surface.
A wireless power system charges electronic devices placed on a flat surface. It has a primary power circuit with multiple transformer windings arranged in layers. These windings are parallel to the surface. There are at least two layers of windings, and the windings in the second layer are positioned offset from the windings in the first layer. An electromagnetic shield is located on the opposite side of the primary power circuit from the flat surface, protecting other components from electromagnetic interference.
2. The system of claim 1 , wherein the transformer windings of the first and second layers are offset from one another by a distance in a direction in a plane substantially parallel to the planar surface.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the transformer windings in the first and second layers are offset horizontally. This means the windings are shifted relative to each other within a plane that is parallel to the flat charging surface. This horizontal offset changes the magnetic field distribution for better energy transfer.
3. The system of claim 1 , wherein the transformer windings of the first and second layers are offset such that the transformer winding of the second layer at least partially overlaps both of the transformer windings of the first layer.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the transformer winding of the second layer is offset so that it partially overlaps two transformer windings in the first layer. This overlapping arrangement influences the magnetic field coupling between the primary and secondary windings to improve power transfer efficiency.
4. The system of claim 1 , wherein the offset of the winding of the second layer from a winding of the first layer is such that regions of the first layer that generate maximum magnetic flux coincide with regions of the second layer that generate minimum magnetic flux.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the offset between the first and second layer windings is designed such that the locations with maximum magnetic flux generated by the first layer coincide with the locations of minimum magnetic flux generated by the second layer. This specific offset maximizes the uniformity and strength of the overall magnetic field.
5. The system of claim 1 , wherein the transformer windings are formed in a shape comprising at least one from the group consisting of a square, a hexagon, a circle, a rectangle, and a polygon.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the individual transformer windings can be shaped like a square, hexagon, circle, rectangle, or a general polygon. The shape influences the distribution and strength of the magnetic field.
6. The system of claim 1 , wherein the magnetic flux generated by the transformer windings is substantially uniform over at least a majority of the planar surface.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the magnetic flux generated by the transformer windings is designed to be substantially uniform over at least a majority of the flat charging surface. This ensures consistent power delivery regardless of device placement on the surface.
7. The system of claim 1 , wherein the planar surface is divided into a plurality of regions, and each region is associated with a different group of one or more transformer windings.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the flat charging surface is divided into distinct regions. Each region is associated with a separate group of one or more transformer windings. This allows for selective or localized power delivery.
8. The system of claim 1 , wherein the transformer windings are connected to each other in parallel.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the multiple transformer windings are connected to each other in parallel. This parallel connection reduces the overall impedance and allows for higher current delivery.
9. The system of claim 1 , wherein the transformer windings are connected to each other in series.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the multiple transformer windings are connected to each other in series. This series connection increases the overall impedance and allows for higher voltage operation.
10. The system of claim 1 , wherein at least two of the transformer windings are connected to each other in parallel, and at least another two of the transformer windings are connected to each other in series.
In the wireless power system with a flat charging surface and multi-layered transformer windings, some of the transformer windings are connected in parallel, while others are connected in series. At least two windings are connected in parallel and at least two other windings are connected in series. This combined series-parallel configuration allows for a customized voltage and current output.
11. The system of claim 1 , wherein the multilayer comprises at least three or more layers.
In the wireless power system with a flat charging surface and multiple transformer windings, the multi-layer structure comprises at least three or more distinct layers of transformer windings, rather than just two. This increases the complexity of the magnetic field shaping and potentially improves efficiency or power delivery. The windings are still offset relative to each other between layers.
12. The system of claim 1 , wherein the electromagnetic shield comprises a sheet of ferrite material.
In the wireless power system with a flat charging surface, multi-layered transformer windings, and an electromagnetic shield, the electromagnetic shield is made from a sheet of ferrite material. The ferrite material absorbs electromagnetic radiation, preventing interference with nearby devices.
13. The system of claim 1 , wherein the electromagnetic shield comprises at least two sheets of conductive material.
In the wireless power system with a flat charging surface, multi-layered transformer windings, and an electromagnetic shield, the electromagnetic shield consists of at least two sheets of conductive material. These conductive sheets block electromagnetic radiation through reflection and absorption.
14. The system of claim 1 , wherein when a device is placed on the planar surface, energy is transferred to the device from only those transformer windings closely adjacent to the device.
In the wireless power system with a flat charging surface and multi-layered transformer windings, when an electronic device is placed on the surface, only the transformer windings located closest to the device actively transfer energy to it. This localized power transfer strategy improves efficiency and reduces wasted energy.
15. The system of claim 1 , wherein the planar surface is large enough to allow two or more devices to be powered simultaneously.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the flat charging surface is large enough to accommodate two or more electronic devices simultaneously. This enables simultaneous charging of multiple devices on the same surface.
16. The system of claim 1 , wherein the power system is adapted to power two or more devices simultaneously.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the power system is designed to power two or more electronic devices at the same time. The power system provides sufficient power output for simultaneous charging.
17. The system of claim 1 , wherein the planar surface is large enough to allow a device to be moved over the charging surface while being powered.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the flat charging surface is large enough to allow a device to be moved around on the surface while it is being powered. This provides continuous power even as the device's position changes on the charging surface.
18. The system of claim 1 , wherein the power system is adapted to charge a battery of the received electronic device.
In the wireless power system with a flat charging surface and multi-layered transformer windings, the system is specifically designed to charge the battery of an electronic device placed on the charging surface. The system optimizes its power output for efficient battery charging.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
September 18, 2012
August 27, 2013
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.